diff --git a/lib/Support/regcomp.c b/lib/Support/regcomp.c
index 4fd88b12498..2755fd83a82 100644
--- a/lib/Support/regcomp.c
+++ b/lib/Support/regcomp.c
@@ -1419,8 +1419,8 @@ static void
 findmust(struct parse *p, struct re_guts *g)
 {
 	sop *scan;
-	sop *start;    /* start initialized in the default case, after that */
-	sop *newstart; /* newstart was initialized in the OCHAR case */
+	sop *start = 0; /* start initialized in the default case, after that */
+	sop *newstart = 0; /* newstart was initialized in the OCHAR case */
 	sopno newlen;
 	sop s;
 	char *cp;